About: http://webisa.webdatacommons.org/75721337

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	When the mark portion is flat, and portions except the mark portion are constituted by rough surfaces, the mark portion may look black, and the rough surfaces may look white.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com